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  2. Public Use Microdata Area - Wikipedia

    en.wikipedia.org/wiki/Public_Use_Microdata_Area

    As of 2022, based on the results of the 2020 Census, there are 2,487 PUMAs. PUMAs allow the Census to publish census data for sub-state areas throughout every state. For example, the ACS publishes detailed data every year, but due to their sampling procedure only publishes data for census area that have more than 65,000 People.

  3. List of GIS data sources - Wikipedia

    en.wikipedia.org/wiki/List_of_GIS_data_sources

    Online collection of all digital USGS 1:24K scale topographic maps (as well as various other GIS data) covering the United States, available as a free download. NPScape United States Department of the Interior National Park Service NPScape is a landscape dynamics monitoring project that provides landscape-level data, tools, and evaluations for ...

  4. List of United States counties and county equivalents

    en.wikipedia.org/wiki/List_of_United_States...

    The following table lists the 3,244 counties and county equivalents of the United States with the following information for each entity: The county or equivalent; The state or equivalent (federal district or territory) The population as of April 1, 2020 as enumerated by the US Census Bureau [10] The county's area in square miles

  5. County statistics of the United States - Wikipedia

    en.wikipedia.org/wiki/County_statistics_of_the...

    The largest counties and county-equivalents are organized boroughs and the census areas of Alaska with the top two being Yukon–Koyukuk Census Area (145,504.79 sq mi or 376,855.7 km 2) and North Slope Borough (88,695.41 sq mi or 229,720.1 km 2).

  6. County (United States) - Wikipedia

    en.wikipedia.org/wiki/County_(United_States)

    County population map 2022 Census data. The average U.S. county population was 104,435 in 2019, while the median county, which is Nicholas County, West Virginia, had a population of 25,965 in 2019. The most populous county is Los Angeles County, California, with 10,014,009 residents in 2020. This number is greater than the populations of 41 U.S ...

  7. List of core-based statistical areas - Wikipedia

    en.wikipedia.org/wiki/List_of_core-based...

    The United States Office of Management and Budget (OMB) has defined 925 core-based statistical areas (CBSAs) for the United States and 10 for Puerto Rico. [1] The OMB defines a core-based statistical area as one or more adjacent counties or county equivalents that have at least one urban core area of at least 10,000 population, plus adjacent territory that has a high degree of social and ...

  8. Census county division - Wikipedia

    en.wikipedia.org/wiki/Census_county_division

    CCDs do not span county lines. Each CCD is given a name based on the name of the largest population center in the area, a prominent geographic feature, the county name, or another well-known local name that identifies its location. [1] [2] [dead link ‍] CCDs were first implemented for tabulation of 1950 census data from the state of Washington.

  9. ZIP Code Tabulation Area - Wikipedia

    en.wikipedia.org/wiki/ZIP_Code_Tabulation_Area

    Individual USPS ZIP codes can cross state, place, county, census tract, census block group and census block boundaries, so the Census Bureau asserts that "there is no correlation between ZIP codes and Census Bureau geography". [2] Moreover, the USPS frequently realigns, merges, or splits ZIP codes to meet changing needs.